public virtual bool IsSynchronized
{
get { return false; }
}

public virtual object SyncRoot
{
get { return List.SyncRoot; }
}

public virtual void CopyTo(Photograph[] array, int index)
{
List.CopyTo(array, index);
}

// Implementation of the ILIst interface
public virtual bool IsFixedSize
{
get { return false; }
}

public virtual bool IsReadOnly
{
get { return false; }
}

public virtual Photograph this[int index]
{
get { return (Photograph)(List[index]); }
set { List[index] = value; }
}

public virtual int Add(Photograph photo)
{
return List.Add(photo);
}

public virtual bool Contains(Photograph photo)
{
return List.Contains(photo);
}

public virtual int IndexOf(Photograph photo)
{
return List.IndexOf(photo);
}

public virtual void Insert(int index, Photograph photo)
{
List.Insert(index, photo);
}

public virtual void Remove(Photograph photo)
{
List.Remove(photo);
}

我还是不明白有什么用处。。